Character.UnicodeBlock中cjk的說明

2019-11-11 02:55:41

字體：大中小

來源：轉載

供稿：網友

轉: http://www.cnblogs.com/wangziqiang/p/3810440.html

CJK的意思是“Chinese，Japanese，Korea”的簡寫，實際上就是指中日韓三國的象形文字的Unicode編碼

枚舉說明

Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS ： 4E00-9FBF：CJK 統一表意符號 Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS ：F900-FAFF：CJK 兼容象形文字 Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A ：3400-4DBF：CJK 統一表意符號擴展 A Character.UnicodeBlock.GENERAL_PUNCTUATION ：2000-206F：常用標點 Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION ：3000-303F：CJK 符號和標點 Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS ：FF00-FFEF：半角及全角形式

常用函數

/** * 校驗一個字符是否是漢字 * * @param c * 被校驗的字符 * @return true代表是漢字 */ public static boolean isChineseChar(char c) { try { return String.valueOf(c).getBytes("UTF-8").length > 1; } catch (UnsupportedEncodingException e) { e.PRintStackTrace(); return false; } } /** * 驗證字符串內容是否包含下列非法字符<br> * `~!#%^&*=+//|{};:'/",<>/?○●★☆☉♀♂※¤╬の〆 * * @param content * 字符串內容 * @return 't'代表不包含非法字符，otherwise代表包含非法字符。 */ public static char validateLegalString(String content) { String illegal = "`~!#%^&*=+//|{};:'/",<>/?○●★☆☉♀♂※¤╬の〆"; char isLegalChar = 't'; L1: for (int i = 0; i < content.length(); i++) { for (int j = 0; j < illegal.length(); j++) { if (content.charAt(i) == illegal.charAt(j)) { isLegalChar = content.charAt(i); break L1; } } } return isLegalChar; } /** * 驗證是否是漢字或者0-9、a-z、A-Z * * @param c * 被驗證的char * @return true代表符合條件 */ public static boolean isRightChar(char c) { return isChinese(c) || isWord(c); } /** * 校驗某個字符是否是a-z、A-Z、_、0-9 * * @param c * 被校驗的字符 * @return true代表符合條件 */ public static boolean isWord(char c) { String regEx = "[//w]"; Pattern p = Pattern.compile(regEx); Matcher m = p.matcher("" + c); return m.matches(); } /** * 判定輸入的是否是漢字 * * @param c * 被校驗的字符 * @return true代表是漢字 */ public static boolean isChinese(char c) { Character.UnicodeBlock ub = Character.UnicodeBlock.of(c); if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS) { return true; } return false; } /** * 校驗String是否全是中文 * * @param name * 被校驗的字符串 * @return true代表全是漢字 */ public static boolean checkNameChese(String name) { boolean res = true; char[] cTemp = name.toCharArray(); for (int i = 0; i < name.length(); i++) { if (!isChinese(cTemp[i])) { res = false; break; } } return res; }

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